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Radio observations of massive stars in the Galactic centre: The Arches Cluster⋆

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dc.contributor.authorGallego Calvente, A. T.
dc.contributor.authorSchödel, R.
dc.contributor.authorAlberdi, A.
dc.contributor.authorHerrero Illana, R.
dc.contributor.authorNajarro, F.
dc.contributor.authorYusef Zadeh, F.
dc.contributor.authorDong, H.
dc.contributor.authorSánchez Bermudez, J.
dc.contributor.authorShahzamanian, B.
dc.contributor.authorNogueras Lara, F.
dc.contributor.authorGallego Cano, E.
dc.contributor.funderDeutsche Forschungsgemeinschaft (DFG)
dc.contributor.funderEuropean Commssion (EC)
dc.contributor.funderAgencia Estatal de Investigación (AEI)
dc.contributor.orcid0000-0002-6428-8045
dc.contributor.orcid0000-0001-5404-797X
dc.contributor.orcid0000-0002-9371-1033
dc.contributor.orcid0000-0001-6437-6806
dc.contributor.orcid0000-0002-6379-7593
dc.contributor.orcid0000-0002-7452-1496
dc.contributor.otherCentros de Excelencia Severo Ochoa, INSTITUTO DE ASTROFISICA DE ANDALUCIA (IAA), SEV-2017-0709
dc.contributor.otherUnidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737
dc.date.accessioned2021-07-20T10:55:48Z
dc.date.available2021-07-20T10:55:48Z
dc.date.issued2021-03-17
dc.descriptionA copy of the cleaned images is only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/647/A110es
dc.description.abstractWe present high-angular-resolution radio observations of the Arches cluster in the Galactic centre, one of the most massive young clusters in the Milky Way. The data were acquired in two epochs and at 6 and 10 GHz with the Karl G. Jansky Very Large Array. The rms noise reached is three to four times better than during previous observations and we have almost doubled the number of known radio stars in the cluster. Nine of them have spectral indices consistent with thermal emission from ionised stellar winds, one is a confirmed colliding wind binary, and two sources are ambiguous cases. Regarding variability, the radio emission appears to be stable on timescales of a few to ten years. Finally, we show that the number of radio stars can be used as a tool for constraining the age and/or mass of a cluster and also its mass function.es
dc.description.sponsorshipKarl G. Jansky Very Large Array (JVLA) of the National Radio Astronomy Observatory (NRAO) is a facility of the National Science Foundation (NSF) operated under cooperative agreement by Associated Universities, Inc. A.T.G.-C., R.S., A.A. and B.S. acknowledge financial support from the State Agency for Research of the Spanish MCIU through the "Center of Excellence Severo Ochoa" award for the Instituto de Astrofisica de Andalucia (SEV-2017-0709). A.T.G.-C., R.S., and B.S. acknowledge financial support from national project PGC2018-095049-B-C21 (MCIU/AEI/FEDER, UE). A.A. acknowledges support from national project PGC2018-098915-B-C21 (MCIU/AEI/FEDER, UE). F.N. acknowledges financial support through Spanish grants ESP2017-86582-C4-1-R and PID2019-105552RB-C41 (MINECO/MCIU/AEI/FEDER) and from the Spanish State Research Agency (AEI) through the Unidad de Excelencia "Maria de Maeztu"-Centro de Astrobiologia (CSIC-INTA) project No. MDM-2017-0737. F.N.-L. gratefully acknowledges funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - Project-ID 138713538 - SFB 881 ("The Milky Way System", subproject B8). The research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement no [614922].es
dc.identifier.citationAstronomy and Astrophysics 647: A110(2021)es
dc.identifier.doi10.1051/0004-6361/202039172
dc.identifier.e-issn1432-0746
dc.identifier.issn0004-6361
dc.identifier.otherhttps://www.aanda.org/articles/aa/abs/2021/03/aa39172-20/aa39172-20.html
dc.identifier.urihttp://hdl.handle.net/20.500.12666/448
dc.language.isoenges
dc.publisherEDP Scienceses
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-095049-B-C21
dc.relationinfo:eu-repo/grantAgreement/ES/MCI-AEI-FEDER/PGC2018-098915-B-C21
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-86582-C4-1-R/ES/CONTRIBUCION ESPAÑOLA A LAS MISIONES ESPACIALES CRIOGENICAS SPICA Y ATHENA, POST-OPERACIONES DE HERSCHEL Y EXPLOTACION CIENTIFICA MULTIFRECUENCIA/
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-105552RB-C41/ES/CONTRIBUCION DEL CAB A SPICA, DESARROLLO DE INSTRUMENTACION CRIOGENICA Y EXPLOTACION CIENTIFICA MULTILONGITUD DE ONDA/
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/614922
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.license© ESO 2021
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectGalaxy: centeres
dc.subjectOpen clusters and associations: individual: Archeses
dc.subjectRadio continuum: starses
dc.subjectStars: massivees
dc.subjectStars: mass losses
dc.subjectRadiation mechanisms: thermales
dc.titleRadio observations of massive stars in the Galactic centre: The Arches Cluster⋆es
dc.typeinfo:eu-repo/semantics/articlees
dc.type.coarhttp://purl.org/coar/resource_type/c_6501
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication

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